class Course {
 int number;  
    String site;  
    String time;  
    Teacher t;  
Course(int number,String site,String time,Teacher t) {
 setNumber(number);  
    setSite(site);  
    setTime(time);  
    this.t = t;  
}  
void setNumber(int number) {
 this.number = number;  
}  
void setSite(String site) {
 this.site = site;  
}  
void setTime(String time) {
 this.time = time;  
}  
public String toString() { 
 return "课程编号:"+ number +" 课程名称:"+t.TeachLesson+" 地点:"+site+" 时间:"+time;  
}  
} 